...A transfer orbit that minimizes the total change in velocity that must be imparted to a spacecraft when transferring from one circular orbit to another in the same plane, i.e., the amount of energy required. It is named after its inventor, the German Walter Hohmann (1880-1945). In practice, a two-impulse orbit that changes velocity twice, once when leaving the initial orbit and once when reaching the target orbit, minimizes the required velocity (however, depending on the ratio of the transfer orbits, a three-impulse transfer may be optimal), and all of these are called Hohmann-type transfers. *Some of the terminology that mentions "Hohmann, W." is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…同一平面内において円軌道から円軌道への移行を行う場合に,宇宙船に与えなければならない速度変化の合計,つまり必要なエネルギーが最小になるような移行軌道。考案者であるドイツ人ホーマンWalter Hohmann(1880‐1945)にちなんでこう呼ばれる。実際には,初期軌道を離れるときと目標軌道に到達したときの2回,速度変化を行う2インパルス軌道が必要速度最小になり(ただし,移行軌道の比によっては,3インパルスの移行が最適となる場合も存在),これらを含めてホーマン型移行と呼んでいる。… ※「Hohmann,W.」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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